Electrical connectors and their manufacturing methods

Abstract

An electrical connector includes a built-in circuit board, an insulating member, and a shielding housing. The built-in circuit board includes an extension. The insulating member is fixed to the built-in circuit board and includes an attachment portion. The shielding housing has a mating space. The electrical connector includes a tongue extending into the mating space. The tongue includes at least the extension and the attachment portion, wherein the thickness of the tongue includes at least the thickness of the extension and the thickness of the attachment portion. Compared to the prior art, the present invention can obtain a tongue with a target thickness by adjusting the thickness of the attachment portion, thereby reducing the requirements for the built-in circuit board, reducing costs, and improving manufacturing flexibility. The present invention also discloses a method for manufacturing the electrical connector.

Description

Technical Field

[0001] This invention relates to an electrical connector and its manufacturing method, belonging to the field of connector technology. Background Technology

[0002] With the continuous development of electrical connectors, the use of built-in circuit boards as tongues for mating with connectors is becoming increasingly common. Built-in circuit boards are typically printed circuit boards (PCBs). However, the larger manufacturing tolerances of built-in circuit boards make precise dimensional control difficult. If the built-in circuit board is too thick, the contact terminals of the connector will be over-pressed when the tongue is inserted, leading to permanent deformation. If the built-in circuit board is too thin, the contact force between the gold fingers on the tongue and the contact terminals of the connector will be insufficient, easily causing poor contact. Furthermore, different types of electrical connectors have different requirements for tongue thickness. Using built-in circuit boards exclusively as tongues would significantly increase the number and types of built-in circuit boards required, thus increasing costs. Summary of the Invention

[0003] The purpose of this invention is to provide an electrical connector with low cost and high manufacturing flexibility, and a method for manufacturing the same.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an electrical connector, comprising:

[0005] An embedded circuit board includes an extension, the extension including a first mating surface and a second mating surface opposite to the first mating surface, the embedded circuit board including a plurality of mating conductive elements disposed on the first mating surface or the second mating surface, the extension having a thickness defined by the distance between the first mating surface and the second mating surface; and

[0006] A thickness adjustment component is fixed to the built-in circuit board. The thickness adjustment component includes a reference surface. The first mating surface, the second mating surface, and the reference surface are located in different planes. The distance between the reference surface and the first mating surface is defined as the set thickness of the extension.

[0007] The electrical connector is configured to achieve a target thickness greater than the thickness of the extension by controlling the position of the reference surface relative to the extension.

[0008] As a further improvement of the present invention, the thickness adjustment component includes an insulating block injection molded on the built-in circuit board, and the reference surface is an upper injection molded surface or a lower injection molded surface disposed on the insulating block.

[0009] As a further improved technical solution of the present invention, the built-in circuit board includes a first built-in circuit board, the extension includes a first extension disposed on the first built-in circuit board, the first extension includes a first surface and a second surface opposite to the first surface, the plurality of mating conductive elements include a plurality of first mating conductive sheets disposed on the first surface, the first mating surface is the first surface, and the second mating surface is the second surface.

[0010] The insulating block includes a first insulating block injection molded on the first built-in circuit board, the first insulating block including a first abutting surface, the first abutting surface being the lower injection molded surface;

[0011] The electrical connector includes a first circuit board assembly, which includes a first built-in circuit board and a first insulating block.

[0012] As a further improvement of the present invention, the thickness adjustment component includes an insulating component injection molded on the built-in circuit board. The insulating component includes an attachment portion, which includes a third surface abutting against a second mating surface of the built-in circuit board and a fourth surface opposite to the third surface. The attachment portion has a thickness defined by the distance between the third surface and the fourth surface.

[0013] The electrical connector includes a tongue plate, the tongue plate including at least the extension portion and the attachment portion, wherein the thickness of the tongue plate includes at least the thickness of the extension portion and the thickness of the attachment portion.

[0014] As a further improved technical solution of the present invention, the built-in circuit board includes a second built-in circuit board, the extension includes a second extension disposed on the second built-in circuit board, the second extension includes a fifth surface and a sixth surface opposite to the fifth surface, the plurality of mating conductive elements include a plurality of second mating conductive sheets disposed on the sixth surface, the first mating surface is the sixth surface, and the second mating surface is the fifth surface;

[0015] The insulating block includes a second insulating block injection molded on the second built-in circuit board, the second insulating block including a second abutting surface, the second abutting surface being the upper injection molded surface;

[0016] The electrical connector includes a second circuit board assembly, which includes a second built-in circuit board and a second insulating block.

[0017] As a further improved technical solution of the present invention, the built-in circuit board includes a first built-in circuit board, the extension includes a first extension disposed on the first built-in circuit board, the first extension includes a first surface and a second surface opposite to the first surface, the plurality of mating conductive elements include a plurality of first mating conductive sheets disposed on the first surface, the first mating surface is the first surface, the second mating surface is the second surface, and the reference surface is the fourth surface.

[0018] As a further improved technical solution of the present invention, the built-in circuit board includes a second built-in circuit board, the extension includes a second extension disposed on the second built-in circuit board, the second extension includes a fifth surface and a sixth surface opposite to the fifth surface, the plurality of mating conductive elements include a plurality of second mating conductive sheets disposed on the sixth surface, the first mating surface is the sixth surface, the second mating surface is the fifth surface, and the reference surface is the third surface.

[0019] The present invention also discloses an electrical connector comprising:

[0020] An embedded circuit board includes an extension, the extension including a first surface and a second surface opposite to the first surface, the embedded circuit board including a plurality of mating conductive elements disposed on the first surface, and the extension having a thickness defined by the distance between the first surface and the second surface;

[0021] An insulating member fixed to the embedded circuit board, the insulating member including an attachment portion, the attachment portion including a third surface abutting against a second surface of the embedded circuit board and a fourth surface opposite to the third surface, the attachment portion having a thickness defined by the distance between the third surface and the fourth surface; and

[0022] A shielding housing, the shielding housing having a docking space, the extension and the attachment being at least partially located in the docking space;

[0023] The electrical connector includes a tongue plate, which includes at least the extension portion and the attachment portion, wherein the thickness of the tongue plate includes at least the thickness of the extension portion and the thickness of the attachment portion.

[0024] As a further improvement of the present invention, the insulating member includes a head fixed to the end of the extension, the head having an inclined guide surface and an outer surface connected to the inclined guide surface, the outer surface being flush with the first surface of the extension.

[0025] As a further improved technical solution of the present invention, the built-in circuit board includes a first built-in circuit board and a second built-in circuit board, wherein the extension includes a first extension disposed on the first built-in circuit board and a second extension disposed on the second built-in circuit board, the first extension and the second extension are spaced apart in the thickness direction of the tongue plate, and the electrical connector includes a filling groove located between the first extension and the second extension in the thickness direction of the tongue plate.

[0026] The first extension includes a first surface and a second surface, and the first extension has a thickness defined by the distance between the first surface and the second surface;

[0027] The second extension includes a fifth surface abutting against the fourth surface of the attachment portion and a sixth surface opposite to the fifth surface. The plurality of mating conductive elements include a plurality of first mating conductive sheets disposed on the first surface and a plurality of second mating conductive sheets disposed on the sixth surface. The second extension has a thickness defined by the distance between the fifth surface and the sixth surface.

[0028] The tongue plate includes a first extension, an attachment portion, and a second extension, wherein the attachment portion at least fills the filling groove, and the thickness of the tongue plate is the sum of the thickness of the first extension, the thickness of the attachment portion, and the thickness of the second extension.

[0029] As a further improved technical solution of the present invention, the insulating member includes a head fixed to the end of the tongue plate. The head is provided with a first inclined guide surface, a first outer surface connected to the first inclined guide surface, a second inclined guide surface, and a second outer surface connected to the second inclined guide surface. The first outer surface is flush with the first surface of the first extension, and the second outer surface is flush with the sixth surface of the second extension.

[0030] As a further improvement of the present invention, the insulating component is an injection molded component that is at least injection molded in the filling groove.

[0031] As a further improved technical solution of the present invention, the electrical connector includes a first circuit board assembly and a second circuit board assembly, the first circuit board assembly and the second circuit board assembly are assembled together, wherein the first circuit board assembly includes a first built-in circuit board and a first insulating block for fixing the first built-in circuit board, and the second circuit board assembly includes a second built-in circuit board and a second insulating block for fixing the second built-in circuit board;

[0032] The first insulating block includes a first abutting surface, and the second insulating block includes a second abutting surface, wherein the first abutting surface abuts against the second abutting surface to control the spacing between the first extension and the second extension in the thickness direction of the tongue plate.

[0033] As a further improved technical solution of the present invention, the first insulating block is injection molded on the first built-in circuit board, and the first built-in circuit board includes a first main body connected to the first extension and a first rear end extending rearward from the first main body.

[0034] The second insulating block is injection molded onto the second built-in circuit board, the second built-in circuit board including a second main body connected to the second extension and a second rear end extending rearward from the second main body;

[0035] The first rear end and the second rear end are spaced apart in the thickness direction of the tongue plate, and the electrical connector includes a spacer groove located between the first rear end and the second rear end in the thickness direction of the tongue plate;

[0036] The electrical connector also includes a support block that is at least partially filled in the spacer slot, the support block including a plurality of cable positioning slots.

[0037] As a further improvement of the present invention, the insulating component includes a base injection molded on the first insulating block and the second insulating block, the first built-in circuit board includes a first protrusion protruding from the base, the second built-in circuit board includes a second protrusion protruding from the base, the insulating component includes a first interlayer block injection molded between the first protrusion and the second protrusion, the first interlayer block protruding from the base; the support block further includes a second interlayer block filled between the first protrusion and the second protrusion, the second interlayer block protruding from the base.

[0038] As a further improvement of the present invention, the shielding shell includes side walls located on both sides of the docking space, and the side walls are provided with slots, wherein the first protrusion and the second protrusion are tightly engaged in the slots.

[0039] As a further improved technical solution of the present invention, the first built-in circuit board is provided with a plurality of first through holes that penetrate the first built-in circuit board along the thickness direction of the tongue plate, and the first insulating block passes through the plurality of first through holes.

[0040] The first built-in circuit board is provided with a first retaining hole that penetrates the first built-in circuit board along the thickness direction of the tongue plate, and the first insulating block includes a positioning post formed through the first retaining hole;

[0041] The second built-in circuit board is provided with a plurality of second through holes extending through the second built-in circuit board along the thickness direction of the tongue plate, and the second insulating block passes through the plurality of second through holes;

[0042] The second insulating block includes a positioning hole for receiving the positioning post.

[0043] As a further improvement of the present invention, the electrical connector includes an intermediate circuit board, the intermediate circuit board includes a body portion and an extension portion protruding from the body portion, and at least one surface of the extension portion is provided with a metal conductive sheet.

[0044] The built-in circuit board includes a first built-in circuit board and a second built-in circuit board, wherein the extension includes a first extension disposed on the first built-in circuit board and a second extension disposed on the second built-in circuit board, the extension of the intermediate circuit board is located between the first extension and the second extension in the thickness direction of the tongue plate, and the electrical connector includes a first filling groove located between the first extension and the extension in the thickness direction of the tongue plate and a second filling groove located between the second extension and the extension.

[0045] The attachment portion includes a first attachment portion that is at least partially filled into the first filling groove and a second attachment portion that is at least partially filled into the second filling groove;

[0046] The tongue plate includes a first extension, a first attachment, an extended portion, a second attachment, and a second extension. The thickness of the tongue plate is the sum of the thicknesses of the first extension, the first attachment, the extended portion, the second attachment, and the second extension.

[0047] As a further improvement of the present invention, the first extension protrudes upward from the extension portion in the thickness direction of the tongue plate, and the second extension protrudes downward from the extension portion in the thickness direction of the tongue plate.

[0048] As a further improved technical solution of the present invention, the electrical connector includes a first circuit board assembly and a second circuit board assembly, wherein the first circuit board assembly includes a first built-in circuit board and a first insulating block for fixing the first built-in circuit board, and the second circuit board assembly includes a second built-in circuit board and a second insulating block for fixing the second built-in circuit board;

[0049] The first insulating block is assembled on the intermediate circuit board to control the spacing between the first extension and the extended portion in the thickness direction of the tongue plate;

[0050] The second insulating block is assembled on the intermediate circuit board to control the spacing between the second extension and the extended portion in the thickness direction of the tongue plate.

[0051] The present invention also discloses a method for manufacturing an electrical connector, wherein the electrical connector is the aforementioned electrical connector, and the manufacturing method includes the following steps:

[0052] S1, providing the built-in circuit board, wherein the thickness of the extension of the built-in circuit board is less than the target thickness;

[0053] S2, the thickness adjustment component is provided, and the thickness adjustment component is injection molded onto the built-in circuit board. The set thickness is made to reach the target thickness by controlling the position of the reference surface relative to the extension.

[0054] The present invention also discloses a method for manufacturing an electrical connector, wherein the electrical connector is the aforementioned electrical connector, and the manufacturing method includes the following steps:

[0055] S1, providing the built-in circuit board, wherein the thickness of the extension of the built-in circuit board is less than the target thickness;

[0056] S2, providing the insulating member, integrally forming the insulating member with the built-in circuit board, wherein the thickness of the attachment portion of the insulating member is less than the target thickness; wherein at least the extension portion of the built-in circuit board and the attachment portion of the insulating member form the tongue of the electrical connector, the thickness of the tongue includes at least the thickness of the extension portion and the thickness of the attachment portion, and the thickness of the tongue reaches the target thickness; and

[0057] S3, provide the shielding housing, and assemble and fix the shielding housing to the insulating component.

[0058] Compared to existing technologies, this invention incorporates a thickness adjustment component, which includes a reference surface. By controlling the position of the reference surface relative to the extension, the set thickness is adjusted to achieve the target thickness, thereby reducing the requirements for the built-in circuit board, lowering costs, and increasing manufacturing flexibility. Furthermore, this invention integrates the extension of the built-in circuit board as part of a tongue plate, and also integrates the attachment portion of the insulating component as part of the tongue plate. By adjusting the thickness of the attachment portion, a tongue plate with the target thickness can be obtained, further reducing the requirements for the built-in circuit board, lowering costs, and increasing manufacturing flexibility. Attached Figure Description

[0059] Figure 1 This is a three-dimensional schematic diagram of the electrical connector of the present invention in the first embodiment.

[0060] Figure 2 yes Figure 1The right view.

[0061] Figure 3 yes Figure 1 The left view.

[0062] Figure 4 yes Figure 1 Partial exploded 3D diagram.

[0063] Figure 5 yes Figure 4 Further partial exploded view.

[0064] Figure 6 yes Figure 5 The right view.

[0065] Figure 7 yes Figure 6 Right view of the first and second circuit board assemblies assembled together.

[0066] Figure 8 yes Figure 7 An exploded view of the first circuit board assembly and the second circuit board assembly.

[0067] Figure 9 yes Figure 8 A cross-sectional view of another embodiment.

[0068] Figure 10 yes Figure 5 Another perspective of partial 3D exploded view.

[0069] Figure 11 It is to remove Figure 5 An exploded 3D view of the part behind the shielded shell.

[0070] Figure 12 yes Figure 11 Another perspective of partial 3D exploded view.

[0071] Figure 13 yes Figure 11 Exploded perspective view of the first and second circuit board assemblies.

[0072] Figure 14 It is along Figure 1 A cross-sectional view of line AA in the middle.

[0073] Figure 15 yes Figure 14 A cross-sectional view of another embodiment.

[0074] Figure 16 yes Figure 14 A cross-sectional view of another embodiment.

[0075] Figure 17This is a three-dimensional schematic diagram of the electrical connector of the present invention in a second embodiment.

[0076] Figure 18 yes Figure 17 The right view.

[0077] Figure 19 yes Figure 17 The left view.

[0078] Figure 20 yes Figure 17 Partial exploded 3D diagram.

[0079] Figure 21 yes Figure 20 Further partial exploded view.

[0080] Figure 22 yes Figure 21 The right view.

[0081] Figure 23 yes Figure 22 Right view of the first circuit board assembly, the second circuit board assembly, and the intermediate circuit board assembled together.

[0082] Figure 24 It is to remove Figure 21 An exploded 3D view of the part behind the shielded shell.

[0083] Figure 25 yes Figure 24 Another perspective of partial 3D exploded view.

[0084] Figure 26 It is along Figure 17 A cross-sectional view of the BB line. Detailed Implementation

[0085] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of the present invention as set forth in the claims.

[0086] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this invention. The singular forms “a,” “the,” or “the” as used in the specification and claims of this invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0087] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish features. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "before," "after," "upper," "lower," and similar words appearing in this invention are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" are an open-ended expression, meaning that the element preceding "comprising" or "including" encompasses the element following "comprising" or "including" and its equivalents, but this does not preclude the element preceding "comprising" or "including" from also including other elements. In this invention, the term "several" means two or more.

[0088] Please refer to Figures 1 to 14 As shown in the illustration, a first embodiment of the present invention discloses an electrical connector 100, which includes a first circuit board assembly 10, a second circuit board assembly 20, an insulating member 3, a support block 4, and a shielding housing 5. In the first embodiment of the present invention, the first circuit board assembly 10 and the second circuit board assembly 20 are assembled together. The insulating member 3 is injection molded onto the first circuit board assembly 10 and the second circuit board assembly 20. The shielding housing 5 is made of a metal material and is assembled and fixed to the insulating member 3.

[0089] Please combine Figures 6 to 13 As shown, the first circuit board assembly 10 includes a first built-in circuit board 11 and a first insulating block 12 fixed to the first built-in circuit board 11. In one embodiment of the present invention, the first insulating block 12 is injection molded onto the first built-in circuit board 11 to be integrated with the first built-in circuit board 11 as a whole.

[0090] The first built-in circuit board 11 includes a first main body portion 111, a first extension portion 112 extending forward from the first main body portion 111, and a first rear end portion 113 extending rearward from the first main body portion 111. In the embodiment illustrated in the present invention, the first main body portion 111 is at least partially embedded in the first insulating block 12, and the first main body portion 111 has a plurality of first through holes 1111 extending through the first main body portion 111 in a vertical direction. When the first insulating block 12 is injection molded, the first insulating block 12 passes through the plurality of first through holes 1111, thereby facilitating the molding of the first insulating block 12 and improving the bonding strength between the first insulating block 12 and the first built-in circuit board 11. That is, by enhancing the flow and filling properties of the plastic, the occurrence of incomplete molding is reduced. The first extension portion 112 includes a first surface 1121 (e.g., an upper surface) and a second surface 1122 (e.g., a lower surface) opposite to the first surface 1121. The first built-in circuit board 11 also includes a plurality of first mating conductive sheets 1121a disposed on the first surface 1121. Each first mating conductive sheet 1121a is flat. Of course, in other embodiments, the plurality of first mating conductive sheets 1121a may also be disposed on the second surface 1122. The first extension 112 has a thickness T1 defined by the distance between the first surface 1121 and the second surface 1122. The width of the first rear end portion 113 in the left-right direction is greater than the width of the first main body portion 111 in the left-right direction. The first rear end portion 113 includes first protrusions 1131 that protrude from the first main body portion 111 on both sides. Additionally, the first internal circuit board 11 also has a first retaining hole 114 penetrating the first internal circuit board 11 in the up-down direction. In the embodiment illustrated in the present invention, the first retaining hole 114 is disposed on the first protrusion 1131. Of course, those skilled in the art will understand that the first retaining hole 114 may also be disposed on the first main body portion 111 or at other locations on the first rear end portion 113.

[0091] The first insulating block 12 includes a first abutment surface 121 (e.g., the lower surface) and a positioning post 122 formed through the first retaining hole 114. The positioning post 122 protrudes downward from the first abutment surface 121 to cooperate with the second circuit board assembly 20. The first insulating block 12 also has an upwardly protruding first locking protrusion 123 in the middle.

[0092] The second circuit board assembly 20 includes a second built-in circuit board 21 and a second insulating block 22 fixed to the second built-in circuit board 21. In one embodiment of the present invention, the second insulating block 22 is injection molded onto the second built-in circuit board 21 to be integrated with the second built-in circuit board 21 as a whole.

[0093] The second built-in circuit board 21 includes a second main body portion 211, a second extension portion 212 extending forward from the second main body portion 211, and a second rear end portion 213 extending rearward from the second main body portion 211. In the embodiment illustrated in the present invention, the second main body portion 211 is at least partially embedded in the second insulating block 22, and the second main body portion 211 is provided with a plurality of second through holes 2111 extending through the second main body portion 211 in a vertical direction. When the second insulating block 22 is injection molded, the second insulating block 22 passes through the plurality of second through holes 2111, thereby facilitating the molding of the second insulating block 22 and improving the bonding strength between the second insulating block 22 and the second built-in circuit board 21. That is, by enhancing the flow and filling properties of the plastic, the occurrence of incomplete molding is reduced. The second extension portion 212 includes a fifth surface 2121 (e.g., an upper surface) and a sixth surface 2122 (e.g., a lower surface) opposite to the fifth surface 2121. The second built-in circuit board 21 also includes a plurality of second mating conductive sheets 2122a disposed on the sixth surface 2122. Each second conductive mating piece 2122a is flat. Of course, in other embodiments, the plurality of second conductive mating pieces 2122a may also be provided on the fifth surface 2121. The second extension 212 has a thickness T2 defined by the distance between the fifth surface 2121 and the sixth surface 2122. The width of the second rear end portion 213 in the left-right direction is greater than the width of the second main body portion 211 in the left-right direction. The second rear end portion 213 includes second protrusions 2131 that protrude from the second main body portion 211 on both sides. Additionally, the second internal circuit board 21 also has a second retaining hole 214 penetrating the second internal circuit board 21 in the up-down direction. In the embodiment illustrated in the present invention, the second retaining hole 214 is provided on the second protrusion 2131. Of course, those skilled in the art will understand that the second retaining hole 214 may also be provided on the second main body portion 211 or at other locations on the second rear end portion 213.

[0094] The second insulating block 22 includes a second abutting surface 221 (e.g., the upper surface) and a positioning hole 222 that extends upward through the second abutting surface 221 and is vertically aligned with the second retaining hole 214.

[0095] In the illustrated embodiment of the present invention, the overarching concept of the first extension 112 and the second extension 212 is "extension," meaning that the extension includes the first extension 112 and / or the second extension 212. The extension includes a first mating surface and a second mating surface opposite to the first mating surface. The extension has a thickness defined by the distance between the first mating surface and the second mating surface. Please refer to... Figure 8 and Figure 9 As shown, taking the first circuit board assembly 10 as an example, when the extension is the first extension 112, the first mating surface is the first surface 1121, and the second mating surface is the second surface 1122. Similarly, taking the second circuit board assembly 20 as an example, when the extension is the second extension 212, the first mating surface is the sixth surface 2122, and the second mating surface is the fifth surface 2121.

[0096] Please combine Figures 5 to 13 As shown in the illustrated embodiment of the present invention, after the first circuit board assembly 10 and the second circuit board assembly 20 are assembled, the positioning post 122 of the first insulating block 12 is inserted into the positioning hole 222 of the second insulating block 22; the first abutting surface 121 of the first insulating block 12 abuts against the second abutting surface 221 of the second insulating block 22 to control the vertical spacing between the first extension 112 and the second extension 212. The electrical connector 100 includes a filling groove 110 located between the first extension 112 and the second extension 212 in the vertical direction.

[0097] Please combine Figure 14 As shown, in one embodiment of the present invention, the insulating member 3 is an injection-molded part at least in the filling groove 110. Specifically, the insulating member 3 includes an attachment portion 31 filled in the filling groove 110, a head 32 extending forward from the attachment portion 31, and a base portion 33 injection-molded on the first insulating block 12 and the second insulating block 22. The attachment portion 31 includes a third surface 311 (e.g., an upper surface) abutting against the second surface 1122 of the first extension 112 and a fourth surface 312 (e.g., a lower surface) opposite the third surface 311. The fifth surface 2121 of the second extension 212 abuts against the fourth surface 312 of the attachment portion 31. The attachment portion 31 has a thickness T3 defined by the distance between the third surface 311 and the fourth surface 312. In the embodiment illustrated in the present invention, the attachment portion 31 refers to an element that adheres to the surface of the first extension 112 and / or the second extension 212 to increase thickness. The attachment portion 31 may be fixed to or not fixed to the first extension portion 112 and / or the second extension portion 212. Preferably, the attachment portion 31 is fixed to the first extension portion 112 and / or the second extension portion 212 (e.g., by injection molding).

[0098] Please combine Figure 14As shown in the illustrated embodiment of the present invention, the head 32 is located at the front end of the first extension 112 and at the front end of the second extension 212, thereby protecting the first extension 112 and the second extension 212. Specifically, the head 32 includes a first inclined guide surface 321, a first outer surface 322 connected to the first inclined guide surface 321, a second inclined guide surface 323, and a second outer surface 324 connected to the second inclined guide surface 323. The first inclined guide surface 321 and the second inclined guide surface 323 cause the head 32 to taper in a backward-forward direction, thereby facilitating the insertion of the head 32 into the mating slot (not shown) of the mating connector. The first outer surface 322 is the upper surface of the head 32, and the first outer surface 322 is flush with the first surface 1121 of the first extension 112. The second outer surface 324 is the lower surface of the head 32, and the second outer surface 324 is flush with the sixth surface 2122 of the second extension 212.

[0099] The electrical connector 100 includes a tongue plate 30. Please refer to... Figure 14 As shown, in one embodiment of the present invention, the tongue plate 30 includes a first extension 112, an attachment portion 31, and a second extension 212. The thickness T4 of the tongue plate 30 in the vertical direction includes the thickness T1 of the first extension 112, the thickness T3 of the attachment portion 31, and the thickness T2 of the second extension 212. In other words, in this embodiment, the thickness T4 of the tongue plate 30 in the vertical direction is equal to the sum of the thickness T1 of the first extension 112, the thickness T3 of the attachment portion 31, and the thickness T2 of the second extension 212. Those skilled in the art will understand that in the embodiment illustrated in the present invention, the thickness direction of the tongue plate 30 is the vertical direction.

[0100] In the illustrated embodiment of the present invention, the first insulating block 12 and the second insulating block 22 are collectively referred to as insulating blocks; the insulating blocks and the insulating member 3 are collectively referred to as thickness adjustment members. The thickness adjustment member includes a reference surface. The first mating surface, the second mating surface, and the reference surface are located in different planes. In the illustrated embodiment of the present invention, the first mating surface, the second mating surface, and the reference surface are arranged parallel to each other in the vertical direction. The distance between the reference surface and the first mating surface is defined as the setting thickness T0 of the extension.

[0101] Depending on the design, the reference surface may vary. In one embodiment of the invention, the reference surface is an upper injection molding surface M1 or a lower injection molding surface M2 located on the insulating block. The upper injection molding surface M1 is the injection molding surface located at the top of the insulating block, and the lower injection molding surface M2 is the injection molding surface located at the bottom of the insulating block. Specifically, please refer to... Figure 8 and Figure 9 As shown in the illustrated embodiment of the present invention, the lower injection-molded surface M2 is the first abutment surface 121, and the upper injection-molded surface M1 is the second abutment surface 221. The electrical connector 100 is configured to achieve a target thickness T0 by controlling the position of the reference surface relative to the extension, the target thickness being greater than the thickness of the extension. In other words, in one embodiment of the invention, the target thickness T0 is achieved by controlling the position of the first abutment surface 121 and / or the second abutment surface 221 relative to the extension. Preferably, when the first abutment surface 121 and / or the second abutment surface 221 are planes formed by injection molding, this design is more advantageous for controlling the target thickness T0 to achieve the desired thickness because the injection molding process itself allows for precise dimensional control. In the present invention... Figure 14 In the illustrated embodiment, those skilled in the art will understand that the lower injection molding surface M2 of the first insulating block 12 and the upper injection molding surface M1 of the second insulating block 22 are bonded together to form the reference surface.

[0102] In another embodiment of the invention, taking the first circuit board assembly 10 as an example, the first mating surface is the first surface 1121, the second mating surface is the second surface 1122, and the reference surface is the fourth surface 312; or taking the second circuit board assembly 20 as an example, the first mating surface is the sixth surface 2122, the second mating surface is the fifth surface 2121, and the reference surface is the third surface 311. The electrical connector 100 is configured to control the position of the reference surface relative to the extension so that the set thickness T0 reaches a target thickness, the target thickness being greater than the thickness of the extension. Preferably, when the third surface 311 and / or the fourth surface 312 are planes formed by injection molding, since the injection molding process itself can achieve precise dimensional control, this design is more conducive to controlling the set thickness T0 to achieve the target thickness.

[0103] Please combine Figure 15As shown, in another embodiment of the present invention, the electrical connector 100 includes only one built-in circuit board, namely the first built-in circuit board 11. In this case, the tongue plate 30 includes the first extension 112 and the attachment portion 31. The thickness T4 of the tongue plate 30 in the vertical direction includes the thickness T1 of the first extension 112 and the thickness T3 of the attachment portion 31. In other words, in this embodiment, the thickness T4 of the tongue plate 30 in the vertical direction is equal to the sum of the thickness T1 of the first extension 112 and the thickness T3 of the attachment portion 31.

[0104] Please combine Figure 16 As shown, in another embodiment of the present invention, the electrical connector 100 includes only one built-in circuit board, namely the second built-in circuit board 21. In this case, the tongue plate 30 includes the attachment portion 31 and the second extension portion 212. The thickness T4 of the tongue plate 30 in the vertical direction includes the thickness T3 of the attachment portion 31 and the thickness T2 of the second extension portion 212. In other words, in this embodiment, the thickness T4 of the tongue plate 30 in the vertical direction is equal to the sum of the thickness T3 of the attachment portion 31 and the thickness T2 of the second extension portion 212.

[0105] Please combine Figure 14 As shown in the illustrated embodiment of the present invention, the electrical connector 100 includes a spacer groove 120 located in the vertical direction between a first rear end portion 113 of the first built-in circuit board 11 and a second rear end portion 213 of the second built-in circuit board 21. The support block 4 is at least partially received in the spacer groove 120. The support block 4 includes a plurality of cable positioning grooves 40 for positioning cables (not shown).

[0106] Please combine Figures 1 to 3 , Figure 5 as well as Figure 14 As shown, in one embodiment of the present invention, the support block 4 is injection molded in the spacer groove 120. Specifically, the electrical connector 100 includes a slot 124 located in the vertical direction between a first protrusion 1131 of the first rear end portion 113 and a second protrusion 2131 of the second rear end portion 213. The insulating member 3 includes a first interlayer block 34 injection molded in the slot 124. The first interlayer block 34 protrudes from the base 33 in the left-right direction. The support block 4 includes a second interlayer block 44 injection molded in the slot 124. The first interlayer block 34 fills the front half of the slot 124 in the front-back direction, and the second interlayer block 44 fills the rear half of the slot 124 in the front-back direction. Preferably, the second interlayer block 44 and the first interlayer block 34 are integrated as a whole, thereby improving the overall structural strength of the electrical connector 100.

[0107] Please combine Figure 4 As shown, the shielding housing 5 includes a top wall 51, a bottom wall 52 opposite to the top wall 51, a first side wall 53 connecting the top wall 51 and the bottom wall 52, a second side wall 54 opposite to the first side wall 53, and a mating space 50 enclosed by the top wall 51, the bottom wall 52, the first side wall 53, and the second side wall 54. The mating space 50 is used to accommodate a mating connector. The top wall 51 and / or the bottom wall 52 are each provided with two first abutment spring arms 55 protruding inward into the mating space 50. The first side wall 53 and / or the second side wall 54 are each provided with a second abutment spring arm 56 protruding inward into the mating space 50. Both the first abutment spring arm 55 and the second abutment spring arm 56 are used to abut against the housing of the mating connector to improve the insertion and extraction force and to achieve grounding. In the embodiment illustrated in the present invention, the top wall 51 further includes a first latching hole 511 that engages with the first latching protrusion 123 of the first insulating block 12. This configuration allows the shielding housing 5 to be latched and fixed to the first circuit board assembly 10 and the second circuit board assembly 20 after the first circuit board assembly 10, the second circuit board assembly 20, and the insulating member 3 are assembled as a whole with the shielding housing 5. After assembly, the tongue plate 30 is at least partially located in the mating space 50. The first mating conductive piece 1121a and the second mating conductive piece 2122a are both exposed in the mating space 50 to abut against the resilient terminals (not shown) of the mating connector.

[0108] In the embodiment illustrated in the present invention, both the first sidewall 53 and the second sidewall 54 are provided with a slot 57, which extends rearward through the first sidewall 53 and the second sidewall 54. When the first circuit board assembly 10, the second circuit board assembly 20, the insulating member 3, and the support block 4 are assembled as a whole with the shielding housing 5, the first protrusion 1131 and the second protrusion 2131 are tightly engaged in the slot 57 in the vertical direction.

[0109] Please combine Figures 17 to 26 As shown, the second embodiment of the present invention also discloses another electrical connector 100, which includes a first circuit board assembly 10, a second circuit board assembly 20, an insulating member 3, an intermediate circuit board 6, a support block 4, and a shielding housing 5. The following description focuses only on the main differences between the electrical connector 100 in the first embodiment and the electrical connector 100 in the second embodiment; similar or identical parts will not be repeated.

[0110] In a second embodiment of the present invention, the first circuit board assembly 10 is assembled on the intermediate circuit board 6, and the second circuit board assembly 20 is also assembled on the intermediate circuit board 6.

[0111] Specifically, in the embodiment illustrated in the present invention, the intermediate circuit board 6 includes a body portion 61 and an extension portion 62 protruding forward from the body portion 61. The body portion 61 is provided with a plurality of third through holes 611 penetrating the body portion 61 in a vertical direction, so that the insulating member 3 can pass through the third through holes 611 when injection molding. At least one surface of the extension portion 62 is provided with a plurality of metal conductive sheets 621. In one embodiment of the present invention, the extension portion 62 includes an upper surface 622 and a lower surface 623, both of which are provided with the plurality of metal conductive sheets 621. The upper surface 622 of the extension portion 62 is lower than the first surface 1121 of the first extension portion 112 in the vertical direction, forming an upper step; the lower surface 623 of the extension portion 62 is higher than the sixth surface 2122 of the second extension portion 212 in the vertical direction, forming a lower step. In other words, the first extension 112 protrudes upward from the extension 62 in the thickness direction of the tongue plate 30, and the second extension 212 protrudes downward from the extension 62 in the thickness direction of the tongue plate 30.

[0112] The extension 62 of the intermediate circuit board 6 is located between the first extension 112 and the second extension 212 in the thickness direction of the tongue plate 30. The electrical connector includes a first filling groove 63 located between the first extension 112 and the extension 62 of the first built-in circuit board 11 in the thickness direction of the tongue plate, and a second filling groove 64 located between the second extension 212 and the extension 62 of the second built-in circuit board 21.

[0113] The attachment portion 31 of the insulating member 3 includes a first attachment portion 313 that is at least partially filled in the first filling groove 63 and a second attachment portion 314 that is at least partially filled in the second filling groove 64.

[0114] The tongue plate 30 includes a first extension 112, a first attachment 313, an extension 62, a second attachment 314, and a second extension 212. The thickness T4 of the tongue plate 30 in the vertical direction is the sum of the thickness T1 of the first extension 112, the thickness T31 of the first attachment 313, the thickness T5 of the extension 62, the thickness T32 of the second attachment 314, and the thickness T2 of the second extension 212.

[0115] The first circuit board assembly 10 includes a first built-in circuit board 11 and a first insulating block 12 for fixing the first built-in circuit board 11. In one embodiment of the present invention, the first insulating block 12 is injection molded onto the first built-in circuit board 11 to be integrated with the first built-in circuit board 11 as a whole.

[0116] The second circuit board assembly 20 includes the second built-in circuit board 21 and a second insulating block 22 for fixing the second built-in circuit board 21. In one embodiment of the present invention, the second insulating block 22 is injection molded onto the second built-in circuit board 21 to be integrated with the second built-in circuit board 21 as a whole.

[0117] During assembly, the first insulating block 12 of the first circuit board assembly 10 is assembled to the body portion 61 of the intermediate circuit board 6 to control the distance between the first extension portion 112 and the extension portion 62 in the thickness direction of the tongue plate 30, i.e., the thickness of the first filling groove 63 in the vertical direction. The second insulating block 22 of the second circuit board assembly 20 is assembled to the body portion 61 of the intermediate circuit board 6 to control the distance between the second extension portion 212 and the extension portion 62 in the thickness direction of the tongue plate 30, i.e., the thickness of the second filling groove 64 in the vertical direction.

[0118] In a second embodiment of the present invention, the support block 4 includes a first support block 41 and a second support block 42, wherein the first support block 41 is injection molded between the body portion 61 of the intermediate circuit board 6 and the first rear end portion 113 of the first built-in circuit board 11, and the second support block 42 is injection molded between the body portion 61 of the intermediate circuit board 6 and the second rear end portion 213 of the second built-in circuit board 21.

[0119] To facilitate a better understanding of the present invention, the first built-in circuit board 11 and the second built-in circuit board 21 are referred to as "built-in circuit boards," meaning that the built-in circuit boards include the first built-in circuit board 11 and / or the second built-in circuit board 21; the first extension 112 and the second extension 212 are referred to as "extensions," meaning that the extensions include the first extension 112 and / or the second extension 212; the first mating conductive sheet 1121a and the second mating conductive sheet 2122a are referred to as "matting conductive elements," meaning that the mating conductive elements include the first mating conductive sheet 1121a and / or the second mating conductive sheet 2122a; and so on. Furthermore, the first surface, second surface, third surface, fourth surface, fifth surface, sixth surface, upper surface, lower surface, etc., can be adaptively replaced according to different situations, as long as it does not affect the understanding of the core idea of ​​the present invention.

[0120] Furthermore, the present invention also discloses a method for manufacturing the above electrical connector 100, which includes the following steps:

[0121] S1, providing the built-in circuit board, wherein the thickness of the extension of the built-in circuit board is less than the target thickness;

[0122] S2, the insulating member 3 is provided, and the insulating member 3 is integrally formed with the built-in circuit board, wherein the thickness of the attachment portion 31 of the insulating member 3 is less than the target thickness; wherein at least the extension portion of the built-in circuit board and the attachment portion 31 of the insulating member 3 form the tongue plate 30 of the electrical connector 100, and the thickness T4 of the tongue plate 30 includes at least the thickness of the extension portion and the thickness of the attachment portion, and the thickness of the tongue plate reaches the target thickness; and

[0123] S3, provide the shielding housing 5, and assemble and fix the shielding housing 5 with the insulating member 3.

[0124] Specifically, in one embodiment, in step S1, the built-in circuit board includes a first built-in circuit board 11 and a second built-in circuit board 21. In this case, step S1 includes the following sub-steps:

[0125] S11, the first built-in circuit board 11 is provided, and the first insulating block 12 is injection molded onto the first built-in circuit board 11 to form the first circuit board assembly 10;

[0126] S12, providing the second built-in circuit board 21, and injection molding the second insulating block 22 onto the second built-in circuit board 21 to form the second circuit board assembly 20; and

[0127] S13, the first circuit board assembly 10 and the second circuit board assembly 20 are assembled together.

[0128] Specifically, in another embodiment, in step S1, the built-in circuit board includes the first built-in circuit board 11 and the second built-in circuit board 21. In this case, step S1 includes the following sub-steps:

[0129] S11, the first built-in circuit board 11 is provided, and the first insulating block 12 is injection molded onto the first built-in circuit board 11 to form the first circuit board assembly 10;

[0130] S12, the second built-in circuit board 21 is provided, and the second insulating block 22 is injection molded onto the second built-in circuit board 21 to form the second circuit board assembly 20;

[0131] S13, providing the intermediate circuit board 6; and

[0132] S14, the first circuit board assembly 10 and the second circuit board assembly 20 are assembled on the intermediate circuit board 6.

[0133] Please combine Figure 8 as well as Figure 9 As shown, the present invention also discloses another method for manufacturing the above electrical connector 100, which includes the following steps:

[0134] S1, providing the built-in circuit board, wherein the thickness of the extension of the built-in circuit board is less than the target thickness;

[0135] S2, the thickness adjustment component is provided, and the thickness adjustment component is injection molded onto the built-in circuit board. The set thickness T0 is made to reach the target thickness by controlling the position of the reference surface relative to the extension.

[0136] Compared to existing technologies, regardless of whether the built-in circuit board includes the first built-in circuit board 11 and / or the second built-in circuit board 21, and regardless of whether the intermediate circuit board 6 is provided, the present invention uses the thickness adjustment member and controls the position of the reference plane relative to the extension to make the set thickness T0 reach the target thickness. For example, the present invention utilizes the attachment portion 31 of the insulating member 3 (including the first attachment portion 313 and / or the second attachment portion 314, the same below) to increase the thickness in the vertical direction, thereby adjusting the thickness T4 of the tongue plate 30. With this configuration, even if the thickness of the built-in circuit board does not meet the thickness requirement of the tongue plate 30, the target thickness of the tongue plate 30 can be achieved by adjusting the thickness of the attachment portion 31. This design of the present invention can minimize the diversity of thickness requirements for the built-in circuit board caused by different thickness requirements of the tongue plate 30. In short, even with a built-in circuit board of one thickness, various thicknesses of tongue plates 30 can be obtained by changing the thickness of the attachment portion 31. The present invention reduces the requirements for the built-in circuit board, reduces costs, and improves manufacturing flexibility. Preferably, the first insulating block 12 of the present invention is injection molded on the first built-in circuit board 11, the second insulating block 22 of the present invention is injection molded on the second built-in circuit board 21, and the insulating component 3 is injection molded on the first circuit board assembly 10 and the second circuit board assembly 20. With this configuration, the size of the injection molded parts can be more precisely controlled through the injection molding process, which is beneficial to obtaining a tongue plate 30 with more accurate dimensions.

[0137] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of the present invention should be based on those skilled in the art. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. An electrical connector (100), characterized in that, include: An embedded circuit board includes an extension, the extension including a first mating surface and a second mating surface opposite to the first mating surface, the embedded circuit board including a plurality of mating conductive elements disposed on the first mating surface or the second mating surface, and the extension having a thickness defined by the distance between the first mating surface and the second mating surface; as well as A thickness adjustment component is fixed to the built-in circuit board. The thickness adjustment component includes a reference surface. The first mating surface, the second mating surface, and the reference surface are located in different planes. The distance between the reference surface and the first mating surface is defined as the set thickness (T0) of the extension. The electrical connector (100) is configured to achieve a target thickness (T0) by controlling the position of the reference surface relative to the extension, wherein the target thickness is greater than the thickness of the extension.

2. The electrical connector (100) as claimed in claim 1, characterized in that: The thickness adjustment component includes an insulating block injection molded on the built-in circuit board, and the reference surface is an upper injection molded surface (M1) or a lower injection molded surface (M2) provided on the insulating block.

3. The electrical connector (100) as described in claim 2, characterized in that: The built-in circuit board includes a first built-in circuit board (11), and the extension includes a first extension (112) disposed on the first built-in circuit board (11). The first extension (112) includes a first surface (1121) and a second surface (1122) opposite to the first surface (1121). The plurality of mating conductive elements include a plurality of first mating conductive sheets (1121a) disposed on the first surface (1121). The first mating surface is the first surface (1121), and the second mating surface is the second surface (1122). The insulating block includes a first insulating block (12) injection molded on the first built-in circuit board (11), the first insulating block (12) includes a first abutting surface (121), the first abutting surface (121) is the lower injection molding surface (M2); The electrical connector (100) includes a first circuit board assembly (10), which includes a first built-in circuit board (11) and a first insulating block (12).

4. The electrical connector (100) as claimed in claim 1, characterized in that: The thickness adjustment component includes an insulating component (3) injection-molded onto the built-in circuit board. The insulating component (3) includes an attachment portion (31). The attachment portion (31) includes a third surface (311) abutting against a second mating surface of the built-in circuit board and a fourth surface (312) opposite to the third surface (311). The attachment portion (31) has a thickness defined by the distance between the third surface (311) and the fourth surface (312). The electrical connector (100) includes a tongue plate (30), the tongue plate (30) including at least the extension and the attachment portion (31), wherein the thickness of the tongue plate (30) includes at least the thickness of the extension and the thickness of the attachment portion (31).

5. The electrical connector (100) as described in claim 2, characterized in that: The built-in circuit board includes a second built-in circuit board (21), and the extension includes a second extension (212) disposed on the second built-in circuit board (21). The second extension (212) includes a fifth surface (2121) and a sixth surface (2122) opposite to the fifth surface (2121). The plurality of mating conductive elements include a plurality of second mating conductive sheets (2122a) disposed on the sixth surface (2122). The first mating surface is the sixth surface (2122), and the second mating surface is the fifth surface (2121). The insulating block includes a second insulating block (22) injection molded on the second built-in circuit board (21), the second insulating block (22) includes a second abutting surface (221), the second abutting surface (221) is the upper injection molded surface (M1); The electrical connector (100) includes a second circuit board assembly (20), which includes a second built-in circuit board (21) and a second insulating block (22).

6. The electrical connector (100) as claimed in claim 4, characterized in that: The built-in circuit board includes a first built-in circuit board (11), the extension includes a first extension (112) disposed on the first built-in circuit board (11), the first extension (112) includes a first surface (1121) and a second surface (1122) opposite to the first surface (1121), the plurality of mating conductive elements include a plurality of first mating conductive sheets (1121a) disposed on the first surface (1121), the first mating surface is the first surface (1121), the second mating surface is the second surface (1122), and the reference surface is the fourth surface (312).

7. The electrical connector (100) as claimed in claim 4, characterized in that: The built-in circuit board includes a second built-in circuit board (21), the extension includes a second extension (212) disposed on the second built-in circuit board (21), the second extension (212) includes a fifth surface (2121) and a sixth surface (2122) opposite to the fifth surface (2121), the plurality of mating conductive elements include a plurality of second mating conductive sheets (2122a) disposed on the sixth surface (2122), the first mating surface is the sixth surface (2122), the second mating surface is the fifth surface (2121), and the reference surface is the fourth surface (312).

8. An electrical connector (100), characterized in that, include: An embedded circuit board includes an extension, the extension including a first surface (1121) and a second surface (1122) opposite to the first surface (1121), the embedded circuit board including a plurality of mating conductive elements disposed on the first surface (1121), the extension having a thickness defined by the distance between the first surface (1121) and the second surface (1122); An insulating member (3) is fixed to the built-in circuit board. The insulating member (3) includes an attachment portion (31). The attachment portion (31) includes a third surface (311) abutting against a second surface (1122) of the built-in circuit board and a fourth surface (312) opposite to the third surface (311). The attachment portion (31) has a thickness defined by the distance between the third surface (311) and the fourth surface (312). as well as The shielding housing (5) is provided with a docking space (50), and the extension and the attachment (31) are at least partially located in the docking space (50); The electrical connector (100) includes a tongue plate (30), which includes at least the extension and the attachment portion (31), wherein the thickness of the tongue plate (30) includes at least the thickness of the extension and the thickness of the attachment portion (31).

9. The electrical connector (100) as claimed in claim 8, characterized in that: The insulating member (3) includes a head (32) fixed to the end of the extension, the head (32) having an inclined guide surface and an outer surface connected to the inclined guide surface, the outer surface being flush with the first surface (1121) of the extension.

10. The electrical connector (100) as claimed in claim 8, characterized in that: The built-in circuit board includes a first built-in circuit board (11) and a second built-in circuit board (21), wherein the extension includes a first extension (112) disposed on the first built-in circuit board (11) and a second extension (212) disposed on the second built-in circuit board (21), the first extension (112) and the second extension (212) are spaced apart in the thickness direction of the tongue plate (30), and the electrical connector (100) includes a filling groove (110) located between the first extension (112) and the second extension (212) in the thickness direction of the tongue plate (30). The first extension (112) includes a first surface (1121) and a second surface (1122), and the first extension (112) has a thickness (T1) defined by the distance between the first surface (1121) and the second surface (1122). The second extension (212) includes a fifth surface (2121) abutting against the fourth surface (312) of the attachment portion (31) and a sixth surface (2122) opposite to the fifth surface (2121). The plurality of mating conductive elements include a plurality of first mating conductive sheets (1121a) disposed on the first surface (1121) and a plurality of second mating conductive sheets (2122a) disposed on the sixth surface (2122). The second extension (212) has a thickness (T2) defined by the distance between the fifth surface (2121) and the sixth surface (2122). The tongue plate (30) includes a first extension (112), an attachment (31), and a second extension (212), wherein the attachment (31) at least fills the filling groove (110), and the thickness (T4) of the tongue plate (30) is the sum of the thickness (T1) of the first extension (112), the thickness (T3) of the attachment (31), and the thickness (T2) of the second extension (212).

11. The electrical connector (100) as claimed in claim 10, characterized in that: The insulating member (3) includes a head (32) fixed to the end of the tongue plate (30). The head (32) is provided with a first inclined guide surface (321), a first outer surface (322) connected to the first inclined guide surface (321), a second inclined guide surface (323), and a second outer surface (324) connected to the second inclined guide surface (323). The first outer surface (322) is flush with the first surface (1121) of the first extension (112), and the second outer surface (324) is flush with the sixth surface (2122) of the second extension (212).

12. The electrical connector (100) as claimed in claim 10, characterized in that: The insulating element (3) is an injection molded part that is at least injection molded in the filling groove (110).

13. The electrical connector (100) as claimed in claim 10, characterized in that: The electrical connector (100) includes a first circuit board assembly (10) and a second circuit board assembly (20), which are assembled together. The first circuit board assembly (10) includes a first built-in circuit board (11) and a first insulating block (12) for fixing the first built-in circuit board (11). The second circuit board assembly (20) includes a second built-in circuit board (21) and a second insulating block (22) for fixing the second built-in circuit board (21). The first insulating block (12) includes a first abutting surface (121), and the second insulating block (22) includes a second abutting surface (221), wherein the first abutting surface (121) abuts against the second abutting surface (221) to control the spacing between the first extension (112) and the second extension (212) in the thickness direction of the tongue plate (30).

14. The electrical connector (100) as claimed in claim 13, characterized in that: The first insulating block (12) is injection molded onto the first built-in circuit board (11). The first built-in circuit board (11) includes a first main body (111) connected to the first extension (112) and a first rear end (113) extending rearward from the first main body (111). The second insulating block (22) is injection molded onto the second built-in circuit board (21). The second built-in circuit board (21) includes a second main body (211) connected to the second extension (212) and a second rear end (213) extending rearward from the second main body (211). The first rear end portion (113) and the second rear end portion (213) are spaced apart in the thickness direction of the tongue plate (30), and the electrical connector (100) includes a spacer groove (120) located between the first rear end portion (113) and the second rear end portion (213) in the thickness direction of the tongue plate (30). The electrical connector (100) also includes a support block (4) that is at least partially filled in the spacer slot (120), the support block (4) including a plurality of cable positioning slots (40).

15. The electrical connector (100) as claimed in claim 14, characterized in that: The insulating component (3) includes a base (33) injection molded on the first insulating block (12) and the second insulating block (22), the first built-in circuit board (11) includes a first protrusion (1131) protruding from the base (33), the second built-in circuit board (21) includes a second protrusion (2131) protruding from the base (33), the insulating component (3) includes a first interlayer block (34) injection molded between the first protrusion (1131) and the second protrusion (2131), the first interlayer block (34) protruding from the base (33); the support block (4) further includes a second interlayer block (44) filled between the first protrusion (1131) and the second protrusion (2131), the second interlayer block (44) protruding from the base (33).

16. The electrical connector (100) as claimed in claim 15, characterized in that: The shielding housing (5) includes side walls located on both sides of the docking space (50), and the side walls are provided with slots (57), and the first protrusion (1131) and the second protrusion (2131) are tightly engaged in the slots (57).

17. The electrical connector (100) as claimed in claim 14, characterized in that: The first built-in circuit board (11) is provided with a plurality of first through holes (1111) that pass through the first built-in circuit board (11) along the thickness direction of the tongue plate (30), and the first insulating block (12) passes through the plurality of first through holes (1111). The first built-in circuit board (11) is provided with a first retaining hole (114) through the first built-in circuit board (11) along the thickness direction of the tongue plate (30), and the first insulating block (12) includes a positioning post (122) formed through the first retaining hole (114). The second built-in circuit board (21) is provided with a plurality of second through holes (2111) extending through the second built-in circuit board (21) along the thickness direction of the tongue plate (30), and the second insulating block (22) passes through the plurality of second through holes (2111). The second insulating block (22) includes a positioning hole (222) for receiving the positioning post (122).

18. The electrical connector (100) as claimed in claim 8, characterized in that: The electrical connector (100) includes an intermediate circuit board (6), which includes a body portion (61) and an extension portion (62) protruding from the body portion (61). At least one surface of the extension portion (62) is provided with a metal conductive sheet (621). The built-in circuit board includes a first built-in circuit board (11) and a second built-in circuit board (21), wherein the extension includes a first extension (112) disposed on the first built-in circuit board (11) and a second extension (212) disposed on the second built-in circuit board (21), the extension (62) of the intermediate circuit board (6) is located between the first extension (112) and the second extension (212) in the thickness direction of the tongue plate (30), and the electrical connector (100) includes a first filling groove (63) located between the first extension (112) and the extension (62) in the thickness direction of the tongue plate (30) and a second filling groove (64) located between the second extension (212) and the extension (62). The attachment portion (31) includes a first attachment portion (313) that is at least partially filled in the first filling groove (63) and a second attachment portion (314) that is at least partially filled in the second filling groove (64). The tongue plate (30) includes the first extension (112), the first attachment (313), the extension (62), the second attachment (314), and the second extension (212). The thickness (T4) of the tongue plate (30) is the sum of the thickness (T1) of the first extension (112), the thickness (T31) of the first attachment (313), the thickness (T5) of the extension (62), the thickness (T32) of the second attachment (314), and the thickness (T2) of the second extension (212).

19. The electrical connector (100) as claimed in claim 18, characterized in that: The first extension (112) protrudes upward from the extension (62) in the thickness direction of the tongue plate (30), and the second extension (212) protrudes downward from the extension (62) in the thickness direction of the tongue plate (30).

20. The electrical connector (100) as claimed in claim 18, characterized in that: The electrical connector (100) includes a first circuit board assembly (10) and a second circuit board assembly (20), wherein the first circuit board assembly (10) includes a first built-in circuit board (11) and a first insulating block (12) for fixing the first built-in circuit board (11), and the second circuit board assembly (20) includes a second built-in circuit board (21) and a second insulating block (22) for fixing the second built-in circuit board (21). The first insulating block (12) is assembled on the intermediate circuit board (6) to control the spacing between the first extension (112) and the extension (62) in the thickness direction of the tongue plate (30); The second insulating block (22) is assembled on the intermediate circuit board (6) to control the spacing between the second extension (212) and the extension (62) in the thickness direction of the tongue plate (30).

21. A method for manufacturing an electrical connector (100), characterized in that, The electrical connector (100) is the electrical connector (100) as described in any one of claims 1 to 7, and the manufacturing method includes the following steps: S1, providing the built-in circuit board, wherein the thickness of the extension of the built-in circuit board is less than the target thickness; S2, the thickness adjustment component is provided, and the thickness adjustment component is injection molded onto the built-in circuit board. The set thickness (T0) is made to reach the target thickness by controlling the position of the reference surface relative to the extension.

22. A method for manufacturing an electrical connector (100), characterized in that, The electrical connector (100) is the electrical connector (100) as described in any one of claims 8 to 20, and the manufacturing method includes the following steps: S1, providing the built-in circuit board, wherein the thickness of the extension of the built-in circuit board is less than the target thickness; S2, a thickness adjustment component is provided, and the thickness adjustment component is injection molded onto the built-in circuit board, wherein the thickness of the attachment portion (31) of the insulating member (3) is less than the target thickness; wherein at least the extension portion of the built-in circuit board and the attachment portion (31) of the insulating member (3) form the tongue plate (30) of the electrical connector (100), the thickness of the tongue plate (30) includes at least the thickness of the extension portion and the thickness of the attachment portion (31), and the thickness of the tongue plate (30) reaches the target thickness; and S3, provide the shielding housing (5), and assemble and fix the shielding housing (5) with the insulating member (3).

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